Blast-furnace-charging apparatus



T. McDONALD.

BLAST FURNACE CHARGING APPARATUS.

APPLICATION FILED JULY 2601920- //v VENTOR We M v Patented. Oct. 31

' 2 SHEETSSHEET l- WI rwssaes &

T. McDONALD. BLAST FURNACE CHARGING APPARATUS. APPLICATION FILED JULY 26, I920.

Patented met. 31, 192.2,

- ire c THOMAS MCDONALD, OF YOUNGSTOWN, OHIO.

BLAST-EU ENAC TJ-GHAR-G'ING- All? PA'JLRJLTUS.

Application filed an as,

pendently thereof. The construction is such 1 that, when the deflector ring is in a'lowered position, the stock or charge will be deflected towards the center of the furnace, and when such ring is in its .upper position, the charge will llDB thrown outwardly. against the wall of the furnace. The charge thus deflected outwardly by this and similar types of charging apparatus rapidly abrades the fur- 11306? wall; and, to protect the refractory material thereof, it has been the practice to provide the wall with a facing ring of metal wearing .PlZLtBSIOf suflicientvertical extent 1 to cover the;areastruckbythe outwardly deflected charge.

Although constructed of suitable thick metal thesev plates nevertheless wear out quite rapidly and it is necessary to renew them from timeto time whilethe furnace remainsfired; Theusual practice is to discontinue the blast, 'chargeinto the furnace a considerable amount of fresh material to L-form a blanket over the charge already in the furnace, and then builda platform above the .materialon which the workmen stand while removing the worn plates and replac-s ingthem with new ones. lhis work is not only disagreeable and uncomfortable, but also takes considerable time, because the plates are anchored to .the'furnace wall. Since the plates must be renewed at quite frequent intervals, and it is necessary to discontinue the blast while renewing them, considerable is added to the cost of operating the furnace.

The present invention has for its object to provide means for protecting the walls of a blast furnace against abrasion by the falling stock, which means can be much more quickly and easily replaced when worn out than the former protecting means, and which, furthermore, does not need to be renewed as frequently as the former protecting means.

T invention is illustrated inthe accommal view of a blast fur- .ace top; L a plan View ofa distribu- Q'g. e a side 'i'lGX of a portion of the .ior shown in 2; and Figs. .4 and ."ticai oual views tov enlarge scale tor.

The lll'lli'ltrCf) and. charging apparatus shown in the drawin forthe purpose of ill uting tiie invention are substantially patent, but it will be understood that the inrentio: applicable to other forms of apparatus. The furnace is Iprovided at its top with the usual inclined hopper 2 having an extension adapted to beclosed by a \erticul mo: able hell 4, these parts being of well known or of any desired forms of cons ruction.

recording to the present invention, there is provided a distributor including both'an iuwardlyextending deflector ring and an ar for the purpose previously stated and more fully explained in the above-mentioned put out.

in the illustrative embodiment of the invention the distril for 5 is of annularform and is L'O'ilSilifllCliGClQi segments bolted toeach other tliroi i outstanding flanges '6. The (llf ributor eludes a deflectorv ring 7 of ubstantially conical form and a wall-protecting arms; 8 extending downwardlyand at the outside of the ring 7. The armor is 'ibly cylindrical and formed of seg- 4 corresponding in numbers to those of istributor the segments being bolted together 1 through outstanding flanges S). l urthermore, the armor is preferably detach-ably connected to the distribu tor. and for this purpose is provided with a lateral extending flange 10 through which, and a flange 11, clamping bolts 12 extend. Suitable openings 20 are provided in the wall 21 of the distributor for the passage of tie blast furnace gas to the down-corner.

For moving the distributor vertically, it may be provided with outwardl -projecting lugs 13 engaged by rods 14, to the upper ends of'which there are suitably attached rods 15 extending through Stu-fling boxes 16. The construction of the connecting rods and the ofwhich Fig. 1 is a parshowing-t; alte 'nate positions of the distribuie as disclos d in the above mentioned mor extending downwardly below such lhe distributor is preferably verticals. 1y B{l]lll-jt2liJl independently of the bell,

vertical 4 means for moving them vertically may be the same as disclosed in the above-mentioned patent, and hence further description of them need not be made herein.

In Fig. 4 the distributor 5 is shown in its uppermost position. When in such positionarmor 8, this may be quickly done'by renoving the bolts 12which clamp the armor t0 the distributor and also removing the bolts passing through the flanges 9. may be done in a short space of time by workmen standing upon a platform suspended from the distributor or upon a platform built upon a furnace charge in the manner previously explained. By constructing the armor in segments, it may be readily placed in or taken fromr' the furnace through the hopper opening. Thus in the practice of the invention there is elimi nated the dangers involved in and the excessive amount of time required for replacing wearing plates built upon the furnace wall.

According to the provisions of the patent statutes,'I have described the principle and operation of my invention, together with the construction which I now consider to re resent the best embodiment thereof I owever, I desire to have it understood that, within the scope of the appended claims, my invention may be practiced by other forms of construction than that specifically shown and described.

I claim:

1. The combination with a blast furnace, and a charging apparatus therefor including a hopper and a movable bell for closing the lower end of the hopper, of a vertically movable distributor outside of the hopper comprising an inwardly extending deflector ring, and an armor extending downwardly below the lower edgeof said ring, said armor be This ing effective to protect the wall of the furnace against abrasion by the. incoming charge in all positions of the distributor.

2. The combination with a blast furnace, and a charging apparatus therefor including a hopper and a movable bell for closing the lower end of the hopper, of a vertically movable "distributor outside of the hopper comprising a substantially conical inwardlyextending deflector ring, and a continuous substantially cylindrical armor extending downwardly below said ring, said armor be-.

ing effective to protect the wall of the furnace against abrasion by the incoming chargein all positions of the distributor.

The combination with a blast furnace, and a charging apparatus therefor including a hopper and a movable bell for closing the lower end of the hopper, of a distributor outside of the hopper vertically movable independently of the bell, said distributor comprising a substantially conical inwardlyextending deflector ring and a continuous substantially cylindrical armor extending downwardly below said ring and outside thereof, said armor being effective to protect armor extending in cylindrical form down wardly below and outside of said ring and detachably connected thereto.

hand.

THOMAS MoDONALD. Witnesses:

PAUL J. J ONES,

MARIE SEAFERT;

In testimony, I have hereunto .set my" a blast furnace, 

